Display Device Driving Circuit Delay Circuit Noise Protection
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Solution Overview
Problem
Display devices are prone to malfunction due to data loss or modification caused by external noise, which reduces their reliability, especially in electronic devices where high reliability is demanded.
Innovation Solution
Incorporating a delay circuit connected to the memory cell of the driving circuit, which delays and stabilizes control signals to prevent data loss from external noise, ensuring reliable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a memory cell is used in the driving circuit, then data storage functionality is provided, but the system becomes vulnerable to external noise causing data loss or modification
Solution Approach 1:
A delay circuit is introduced as an intermediary component between the control signal source and the memory cell. This delay circuit acts as a buffer that prevents external noise from directly affecting the memory cell, thereby protecting stored data while maintaining normal operation functionality.
Solution Approach 2:
The delay circuit performs preliminary action by introducing a time delay in the control signal path. This timing offset creates a protective window that allows the memory cell to complete its operations before potential noise interference can affect it, preventing data corruption in advance.
2Reliability
If a delay circuit is added to protect the memory cell, then data loss from external noise is prevented, but device complexity increases
Solution Approach 1:
The delay circuit protects the memory cell by changing the timing parameter of control signals. Instead of adding complex filtering or shielding mechanisms, the solution uses parameter modification (time delay) to achieve protection, keeping the circuit design relatively simple while effective against noise.
Data Source
AI summary
A display device includes a display panel including a display area, in which pixels are arranged, and a non-display area, a driving circuit on the non-display area of the display panel, the driving circuit being configured to drive the pixels and including a memory cell, and a delay circuit on the non-display area of the display panel, the delay circuit being connected to the memory cell of the driving circuit and being configured to delay a signal input to the memory cell of the driving circuit.